'anti-neutrality' originates from modern English components: the prefix 'anti-' (from Greek 'anti' meaning 'against') combined with 'neutrality' (from French/Latin roots related to 'neutralis').

'neutral' derives from Latin 'neuter' meaning 'neither of two'; from this developed Medieval/Modern French forms and the English 'neutral' and then 'neutrality' (noun). The productive prefix 'anti-' has been used in English since Classical/Modern periods to form compounds, producing 'anti-neutrality' in contemporary usage.

Initially the elements meant 'against' + 'state of being neutral'; over time the compound has come to be used specifically to denote political or policy opposition to neutrality (an active stance rather than mere negation).